/* ============================================================
   Openctl — landing page
   Two colours only: electric blue + cream. Sections invert.
   ============================================================ */

:root{
  --blue:  #1d1aff;
  --blue-d:#1310c4;
  --cream: #f2f0ea;

  --serif: "Bodoni Moda", "Didot", "Bodoni MT", Georgia, "Times New Roman", serif;
  --sans:  "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --wrap: 1240px;
  --pad:  clamp(18px, 4.4vw, 48px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:40px}
body,h1,h2,h3,p,figure,ul,li{margin:0;padding:0}
ul{list-style:none}
canvas,svg,img{display:block;max-width:100%}
button{font:inherit;color:inherit}

body{
  background:var(--blue);
  color:var(--cream);
  font-family:var(--sans);
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--cream);color:var(--blue)}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}

.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--cream);color:var(--blue);
  padding:10px 16px;font-family:var(--mono);font-size:.8rem}
.skip:focus{left:12px}
:where(a,button):focus-visible{outline:2px solid currentColor;outline-offset:4px}

/* ---------- the logo mark: recoloured to currentColor ---------- */
.mark{
  display:block;width:30px;height:30px;flex:none;
  background-color:currentColor;
  -webkit-mask:url("logos/logo-mark.png") center/contain no-repeat;
          mask:url("logos/logo-mark.png") center/contain no-repeat;
}
.mark-lg{width:56px;height:56px;margin-inline:auto;margin-bottom:22px}

/* ---------- display type ----------
   Bodoni Moda's optical-size axis (6..96) is auto-selected by the browser, and at
   display sizes it picks the high end, where the hairlines thin out to nothing on
   screen. Pin a low opsz + heavier weight so the thin strokes stay legible. */
.hero-title{font-variation-settings:"opsz" 14,"wght" 560}
.giant{font-variation-settings:"opsz" 11,"wght" 580}
.wordmark span{font-variation-settings:"opsz" 12,"wght" 560}
.head{font-variation-settings:"opsz" 22,"wght" 540}
.cell h3,.show-body h3{font-variation-settings:"opsz" 30,"wght" 520}
.brand-name,.nav-side a{font-variation-settings:"opsz" 36,"wght" 520}
/* The numeral "4" carries Bodoni's thinnest hairlines on its diagonal and crossbar,
   which drop out on screen. opsz 8 is the low end of the axis, where the face is cut
   for small text and has almost no stroke contrast — so every stroke stays solid. */
.mult{font-style:normal;font-variation-settings:"opsz" 8,"wght" 700}

/* ---------- shared type ---------- */
.kicker{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.24em;text-transform:uppercase;
  opacity:.75;
}
.giant{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(3.6rem, 15vw, 12.5rem);
  line-height:.86;letter-spacing:-.015em;
  margin:.06em 0 0;
}
.head{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(1.9rem, 4.6vw, 3.7rem);
  line-height:1.02;letter-spacing:-.01em;margin:.35em 0 0;
}
.sub{
  font-size:clamp(.98rem,1.25vw,1.1rem);max-width:60ch;margin-top:20px;opacity:.82;
}
.sub.center,.center{text-align:center}
.sub.center{margin-inline:auto}
.num{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;
  opacity:.6;margin-bottom:14px;
}

/* ============================ HERO ============================ */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;overflow:hidden}
.hero-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:.3}
.hero > *:not(.hero-art){position:relative;z-index:1}

.nav{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:start;
  gap:20px;padding:clamp(20px,3vw,34px) var(--pad) 0;
}
.nav-side{display:flex;gap:clamp(20px,4vw,54px);padding-top:10px}
.nav-right{justify-content:flex-end}
.nav-side a{
  color:inherit;text-decoration:none;
  font-family:var(--serif);font-size:.95rem;letter-spacing:.1em;text-transform:uppercase;
  opacity:.85;transition:opacity .2s ease;
}
.nav-side a:hover{opacity:1;text-decoration:underline;text-underline-offset:5px}

.brand{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:inherit;text-decoration:none;
}
.brand-name{
  font-family:var(--serif);font-size:1.05rem;letter-spacing:.16em;line-height:1;
}

.hero-in{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:clamp(48px,9vh,110px) var(--pad) clamp(40px,7vh,80px);
}
.hero-title{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2.6rem,9.2vw,7.4rem);
  line-height:.98;letter-spacing:-.012em;
}
.hero-title .line{display:block;overflow:hidden}
.hero-title .line > span{
  display:block;
  transform:translateY(110%);
  animation:riseIn 1.05s cubic-bezier(.19,1,.22,1) forwards;
}
.hero-title .line:nth-child(2) > span{animation-delay:.12s}
@keyframes riseIn{to{transform:none}}

.hero-sub{max-width:56ch;margin-top:26px;font-size:clamp(1rem,1.4vw,1.18rem);opacity:.9}
.hero-note{
  margin-top:22px;font-family:var(--mono);font-size:.68rem;
  letter-spacing:.18em;text-transform:uppercase;opacity:.6;
}

/* ---------- buttons ---------- */
.cta-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:36px}
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:15px 26px;text-decoration:none;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  border:1px solid var(--cream);
  transition:background .22s ease, color .22s ease, transform .22s ease;
}
.btn-site{font-weight:500;letter-spacing:.1em}
.btn-tri{font-size:.85em;transition:transform .22s ease}
.btn-fill{background:var(--cream);color:var(--blue)}
.btn-fill:hover{background:transparent;color:var(--cream)}
.btn-line{background:transparent;color:var(--cream)}
.btn-line:hover{background:var(--cream);color:var(--blue)}
.btn:hover{transform:translateY(-2px)}
.btn:hover .btn-tri{transform:translateX(4px)}

/* =========================== BANDS ============================ */
.band{padding:clamp(18px,2.6vw,30px) 0}
.band-blue{background:var(--blue)}
.band.tight{
  padding:clamp(72px,10vw,140px) 0;
  border-top:1px solid rgba(242,240,234,.22);
}

/* cream inset panel, like the reference */
.panel{
  background:var(--cream);color:var(--blue);
  margin-inline:clamp(10px,2.4vw,30px);
  padding:clamp(46px,7vw,110px) clamp(20px,4.4vw,72px) clamp(40px,6vw,86px);
  outline:1px solid rgba(29,26,255,.18);outline-offset:-1px;
}
.panel-head{text-align:center;margin-bottom:clamp(44px,6vw,84px)}
.panel .kicker{opacity:.65}

/* ---------- feature grid ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(30px,4vw,64px) clamp(24px,3.4vw,52px)}
.cell h3{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(1.5rem,2.3vw,2.15rem);line-height:1.02;margin-bottom:20px;
}
.cell-art{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--blue)}
.cell-copy{
  margin-top:20px;
  font-family:var(--mono);font-size:.73rem;line-height:1.85;letter-spacing:.045em;
  text-transform:uppercase;opacity:.85;
}

/* ====================== HOW IT WORKS ========================== */
.modes{display:inline-flex;gap:0;margin:34px 0 26px;border:1px solid rgba(242,240,234,.4)}
.mode{
  background:none;border:0;cursor:pointer;padding:11px 20px;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cream);opacity:.55;transition:opacity .2s ease,background .2s ease,color .2s ease;
}
.mode + .mode{border-left:1px solid rgba(242,240,234,.4)}
.mode:hover{opacity:.85}
.mode[aria-pressed="true"]{background:var(--cream);color:var(--blue);opacity:1}

.diagram{border:1px solid rgba(242,240,234,.28);padding:clamp(14px,2.4vw,28px)}
.diagram-scroll{overflow-x:auto;overflow-y:hidden;scrollbar-width:thin}
.cp{width:100%;height:auto;min-width:680px}
.scroll-hint{
  display:none;margin-top:12px;font-family:var(--mono);font-size:.65rem;
  letter-spacing:.16em;text-transform:uppercase;opacity:.5;
}

.cp text{fill:var(--cream)}
.cp .col{font-family:var(--mono);font-size:11px;letter-spacing:.2em;opacity:.55}
.cp .edge{fill:none;stroke:var(--cream);stroke-width:1;opacity:.32}
.cp .pulse{
  fill:none;stroke:var(--cream);stroke-width:2.6;stroke-linecap:round;
  stroke-dasharray:4 96;animation:flow 2.8s linear infinite;animation-delay:var(--t,0s);
}
@keyframes flow{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}

.cp .node rect{fill:none;stroke:var(--cream);stroke-width:1;opacity:.45}
.cp .node text{font-size:14px;font-family:var(--sans)}
.cp .node.out rect{opacity:.75}

.cp .core-box{fill:rgba(242,240,234,.06);stroke:var(--cream);stroke-width:1;opacity:.85}
.cp .core-title{font-family:var(--mono);font-size:13px;letter-spacing:.22em}
.cp .core-sub{font-family:var(--mono);font-size:11px;letter-spacing:.08em;opacity:.55}
.cp .core-rule{stroke:var(--cream);stroke-width:1;opacity:.3}

.cp .lane{transition:opacity .35s ease}
.cp .lane rect{fill:none;stroke:var(--cream);stroke-width:1;opacity:.4;transition:fill .35s ease,opacity .35s ease}
.cp .lane .dot{fill:var(--cream);opacity:.4;transition:opacity .35s ease}
.cp .lane-name{font-family:var(--mono);font-size:12px;letter-spacing:.14em}
.cp .lane-sub{font-size:12px;font-family:var(--sans);opacity:.6}

.diagram[data-mode="hybrid"] .lane-local rect,.diagram[data-mode="local"] .lane-local rect,
.diagram[data-mode="hybrid"] .lane-cloud rect,.diagram[data-mode="cloud"] .lane-cloud rect{
  fill:rgba(242,240,234,.14);opacity:1;
}
.diagram[data-mode="hybrid"] .lane-local .dot,.diagram[data-mode="local"] .lane-local .dot,
.diagram[data-mode="hybrid"] .lane-cloud .dot,.diagram[data-mode="cloud"] .lane-cloud .dot{opacity:1}
.diagram[data-mode="local"] .lane-cloud,.diagram[data-mode="cloud"] .lane-local{opacity:.3}

/* =========================== SPEED ============================ */
.chart{max-width:900px;margin-inline:auto}
.tl-row + .tl-row{margin-top:30px}
.tl-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px;gap:12px}
.tl-name{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;opacity:.7}
.tl-val{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;opacity:.55}
.is-us .tl-name,.is-us .tl-val{opacity:1;font-weight:500}

.tl-track{height:46px;border:1px solid rgba(29,26,255,.3);overflow:hidden}
.tl-bar{display:flex;height:100%;width:var(--w);transform:scaleX(0);transform-origin:left center;
  transition:transform 1.15s cubic-bezier(.19,1,.22,1)}
.is-visible .tl-bar{transform:scaleX(1)}
.tl-row + .tl-row .tl-bar{transition-delay:.18s}
.seg{flex:var(--f) 1 0;height:100%;background:var(--blue)}
.seg.s2{opacity:.72}.seg.s3{opacity:.48}.seg.s4{opacity:.28}
.seg + .seg{box-shadow:inset 1px 0 0 var(--cream)}

.legend{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:30px;padding-top:24px;
  border-top:1px solid rgba(29,26,255,.2)}
.legend li{display:flex;align-items:center;gap:9px;font-family:var(--mono);
  font-size:.68rem;letter-spacing:.1em;text-transform:uppercase}
.legend i{width:11px;height:11px;flex:none;background:var(--blue)}
.legend i.s2{opacity:.72}.legend i.s3{opacity:.48}.legend i.s4{opacity:.28}

/* ========================== SHOWCASE ========================== */
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,40px);margin-top:clamp(44px,6vw,72px)}
.show-card{
  display:block;color:inherit;text-decoration:none;
  border:1px solid rgba(242,240,234,.3);
  transition:background .3s ease,transform .3s ease,border-color .3s ease;
}
.show-card:hover{background:rgba(242,240,234,.07);border-color:var(--cream);transform:translateY(-4px)}
.show-art{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--blue-d)}
.show-body{padding:clamp(22px,3vw,34px)}
.show-body h3{font-family:var(--serif);font-weight:400;font-size:clamp(1.5rem,2.6vw,2.3rem);
  line-height:1;margin-bottom:16px}
.show-cta{
  display:inline-flex;align-items:center;gap:.5em;margin-top:22px;
  font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  border-bottom:1px solid currentColor;padding-bottom:3px;
}
.show-card:hover .show-cta span{transform:translateX(4px);display:inline-block;transition:transform .25s ease}

/* ==================== WORDMARK + FOOTER ======================= */
.foot{background:var(--blue);overflow:hidden}
.wordmark{
  display:flex;justify-content:center;
  padding-top:clamp(30px,5vw,60px);
  line-height:.72;
}
.wordmark span{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(4.6rem,20.5vw,19rem);
  letter-spacing:-.02em;white-space:nowrap;
  will-change:transform;
}
.foot-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px 32px;
  padding:26px var(--pad) 34px;
  border-top:1px solid rgba(242,240,234,.22);
  margin-top:clamp(24px,4vw,48px);
}
.foot-bar .brand{flex-direction:row;gap:11px}
.foot-bar .mark{width:24px;height:24px}
.foot-links{display:flex;flex-wrap:wrap;gap:14px 26px;margin-left:auto}
.foot-links a{color:inherit;text-decoration:none;font-family:var(--mono);
  font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;opacity:.75;transition:opacity .2s}
.foot-links a:hover{opacity:1;text-decoration:underline;text-underline-offset:4px}
.foot-copy{font-family:var(--mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;opacity:.5}

/* ========================== REVEALS =========================== */
.reveal{
  opacity:0;transform:translateY(26px);
  transition:opacity .9s cubic-bezier(.19,1,.22,1) var(--d,0s),
             transform .9s cubic-bezier(.19,1,.22,1) var(--d,0s);
}
.reveal.is-visible{opacity:1;transform:none}

/* ========================= RESPONSIVE ========================= */
@media (max-width:1000px){
  .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .nav{grid-template-columns:1fr;justify-items:center;gap:16px}
  .nav-side{display:none}
  .scroll-hint{display:block}
  .showcase{grid-template-columns:1fr}
}
@media (max-width:640px){
  .grid{grid-template-columns:1fr;gap:44px}
  .cta-row{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .foot-links{margin-left:0;width:100%}
  .tl-head{flex-direction:column;gap:3px}
  .band.tight{padding:64px 0}
}

/* ====================== MOTION PREFERENCE ===================== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .tl-bar{transform:scaleX(1)}
  .hero-title .line > span{transform:none}
  .cp .pulse{display:none}
}